Even though I lived in my early youth in Illinois and it has winters, cold. I remember many times when the Milwaukee Road engine would come early in the mornings to pick up the Hogs, sheep, and cattle that the farmers including my dad had sold and delivered them to the pick-up pens. Many times we would be invited into the caboose for coffee or hot chocolate, and yes the chimney was smoking, fueled with coal. There would be smoke coming out come summer or winter months. Besides heating, the crew cooked their meals and of course, there was always a pot on.
As some have said, the smoke wasn't like a locomotive, rather a wisp, but it smoked. I have a smoker, and with resistors got the voltage down to were the draw doesn't heat up enough to melt the sides, and I've had it smoking for over 6 years now.
